Keir spent ten years with the University of Sheffield, studying for a BA in History, an MA in International Criminology, an MA in Law, and a PhD in Criminal Justice. He is studying part-time with The Open University for a BSc in Economics & Maths. 

Keir joined the Department of Social Policy and Criminology at the Open University in January 2017, supporting the development of the university’s new BA(Hons) Criminology. Keir’s most recent research focuses on young people’s involvement in gangs and drug distribution.

Keir is the lead criminologist for the cross-party Youth Violence Commission, headed by MP Vicky Foxcroft. He has presented papers on gangs and serious youth violence at the National Police Chiefs’ Council Open Source conference, the Home Office’s Quarterly Forum on Ending Gang Violence and Exploitation, and the annual Youth Justice Convention. 

Keir has also conducted research and published papers on the subjects of probation, sentencing, deterrence, education for children excluded from mainstream schooling, and young people’s use of social media.